Industrial Scientific 17155304-N Ventis PRO 5 Methane (CH4) IR Sensor, Dual Range, 4 Series MFG# IS-17155304-N $938.45 Choose Options
Industrial Scientific 17155304-M Ventis PRO 4/5 Methane (CH4) Sensor, Measuring Range 0-5% Vol, 4 Series Catalytic MFG# IS-17155304-M $389.42 Choose Options